I have tried ftp with FreeCommand 2009.02a.
I downloaded a file from remote site, modified it locally.
Then when I switch from the text editor back to FreeCcommander, the FreeCommander notified me that the downloaded file was modified and it ask me to update the remote file or not.

It is a good feature. But I do not know how this works.
Because I downloaded another file, modified it locally, but FreeCommander does not ask me to update the remote file.